Combined filtration membrane and water flow optimization support

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By combining a filter membrane and a water flow optimization support, and employing a three-layer filter pore decreasing design and a rotating water distribution system, the problems of water flow dead zones and short-circuiting in traditional membrane modules are solved, achieving high-efficiency filtration and reducing membrane fouling, thus extending the membrane's service life.

CN224530690UActive Publication Date: 2026-07-21ZHENJIANG WELLINGTON MEMBRANE CO LTD

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Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: ZHENJIANG WELLINGTON MEMBRANE CO LTD
Filing Date: 2025-07-08
Publication Date: 2026-07-21

AI Technical Summary

Technical Problem

Traditional membrane modules have simple water flow path designs, which can easily create dead zones or short-circuit, reducing filtration efficiency and exacerbating membrane fouling.

Method used

It adopts a combined filter membrane and water flow optimization support, including a three-layer filter membrane body with progressively decreasing filter pores and an inclined water guide slope design. Combined with the impeller-driven water distribution plate rotation, it forms a physical graded filtration system and a spiral water flow path, avoiding dead zones and local concentration polarization, and delaying membrane fouling.

Benefits of technology

It improves filtration accuracy and efficiency, reduces membrane fouling, extends membrane lifespan, ensures uniform liquid flow through each membrane layer, reduces the penetration of untreated water, and enhances the permeation efficiency of small molecules.

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Abstract

The utility model discloses a combined filter membrane and water flow optimization support, including filter drum, the bottom surface fixed connection drain pipe of filter drum, the inside screw thread connection outer thread pipe of filter drum, the inside rotatory connection water distribution spare of outer thread pipe, the top surface fixed connection cover plate of outer thread pipe, the top surface of cover plate is equipped with driving element, and driving element rotates and penetrates the top surface of cover plate, and with water distribution spare fixed connection, and the outer part of driving element is equipped with inlet pipe and outlet pipe respectively, and outlet pipe is fixedly connected with cover plate, and the bottom surface of outer thread pipe abuts against support frame, and support frame is slidably connected in filter drum, and support frame is equipped with filter element in. The utility model discloses through the impeller drive water distribution board rotation, and the water distribution mouth cooperates with the bend groove and sprays the water even to the filter membrane surface, solves the problem of traditional static water distribution dead zone, avoids local concentration polarization, significantly delays the membrane pollution, increases effective filtration time, promotes the penetration efficiency of small molecule material, reduces the deposition of macromolecular material on the membrane surface simultaneously.

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Description

Technical Field

[0001] This utility model relates to the field of filter membrane technology, and in particular to a combined filter membrane and a water flow optimization support. Background Technology

[0002] Membrane filtration technology, also known as pressure-driven membrane separation technology, is an advanced method for deep water treatment. Under certain pressure, when the feed solution flows over the membrane surface, the numerous tiny pores on the membrane surface allow only water and small molecules to pass through, becoming the permeate. Substances in the feed solution with a volume larger than the pore size are retained on the feed side of the membrane, becoming the concentrate. This achieves the separation and concentration of the feed solution.

[0003] Membrane filtration technology is widely used in water treatment, biomedicine, food industry, and other fields. Its core principle is to separate specific components from a mixture through physical or chemical processes. Common membrane filtration methods include microfiltration (MF), ultrafiltration (UF), nanofiltration (NF), and reverse osmosis (RO) membranes, with separation precision increasing in that order. Traditional membrane modules often feature simple water flow path designs, which can easily lead to dead zones or short-circuiting, reducing filtration efficiency and exacerbating membrane fouling. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a combined filter membrane and a water flow optimization support.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a combined filter membrane and water flow optimization support, comprising a filter cylinder, a drain pipe fixedly connected to the bottom surface of the filter cylinder, an external threaded pipe connected internally to the filter cylinder, a water distribution component rotatably connected internally to the external threaded pipe, a cover plate fixedly connected to the top surface of the external threaded pipe, a driving component provided on the top surface of the cover plate, the driving component rotatably penetrating the top surface of the cover plate and fixedly connected to the water distribution component, an inlet pipe and an outlet pipe respectively provided on the outside of the driving component, the outlet pipe being fixedly connected to the cover plate, the bottom surface of the external threaded pipe abutting against a support frame, the support frame being slidably connected inside the filter cylinder, and a filter element being provided inside the support frame.

[0006] As a further description of the above technical solution: the support frame includes two symmetrically slidably connected arc-shaped plates inside the filter cylinder. Two mounting grooves are symmetrically opened on the side wall of the filter cylinder. The arc-shaped plates are slidably connected in the mounting grooves. The top surfaces of the two arc-shaped plates are jointly fixed with a fixing ring. The filter element is connected between the two arc-shaped plates. By setting the support frame, the filter element is supported and installed.

[0007] As a further description of the above technical solution: the water distribution component includes a connecting ring fixedly connected to the inner wall of the external threaded pipe, the top surface of the connecting ring is rotatably connected to a water distribution plate, the top surface of the water distribution plate has four water outlets distributed in an equidistant annular array, the bottom surface of the water distribution plate is fixedly connected to multiple bends, the bends are located below the water outlets, and the driving component is fixedly connected to the center of the top surface of the water distribution plate; by setting the water distribution component, the water entering the filter cartridge falls evenly on the filter element, thus prolonging the flow time of the liquid on the filter element.

[0008] As a further description of the above technical solution: the driving component includes a water inlet chamber fixedly connected to the center of the top surface of the cover plate, an impeller rotatably connected inside the water inlet chamber, a rotating shaft fixedly connected to the bottom surface of the impeller, the rotating shaft rotatably passing through the cover plate and fixed to the center of the top surface of the water distribution plate, and the water inlet pipe and the water outlet pipe fixed outside the water inlet chamber; by setting the driving component, the water distribution component is driven to rotate.

[0009] As a further description of the above technical solution: the filter element includes three support rings axially mounted at equal intervals between the two arc-shaped plates, and a filter membrane body is fixedly connected in each support ring. The pore diameter of the three filter membrane bodies decreases progressively from top to bottom. The top surface of the support ring is provided with a water guiding slope inclined towards the center of the support ring. By setting the filter element, water is filtered in multiple stages.

[0010] As a further description of the above technical solution: the inner sides of the two arc-shaped plates are respectively provided with slots, and the slots are slidably connected with the slots. The slots are fixedly connected to the support rings, and the bottom surface of the slots passes through the mounting holes. Long bolts are fitted into the mounting holes, and the ends of the long bolts are threaded to the top wall of the slots. By connecting the support rings to the arc-shaped plates with long bolts, it is convenient to disassemble and replace the filter elements.

[0011] As a further description of the above technical solution: a guide block is slidably connected in the mounting groove, the guide block abuts against the bottom surface of the arc-shaped plate, the fixing ring abuts against the bottom surface of the external threaded pipe, and a compressed spring is fixed between the guide block and the bottom wall of the mounting groove; by using a spring to slidably connect a guide block in the mounting groove and abutting the guide block against the bottom surface of the arc-shaped plate, it is convenient to remove the support frame from the filter cylinder and disassemble and replace the filter element.

[0012] This utility model has the following beneficial effects:

[0013] Compared with existing technologies, this combined filter membrane and water flow optimization support, by employing a three-layer filter membrane body with progressively decreasing pore size, forms a physical hierarchical filtration system. This system intercepts pollutants of different particle sizes at each stage, reducing the load on individual membrane layers and improving overall separation accuracy. The inclined water-guiding slope design on the top surface of the support ring guides the water flow towards the center of the membrane, avoiding edge short-circuiting and ensuring that the liquid passes evenly through each membrane layer, reducing the possibility of untreated water directly penetrating. Furthermore, the impeller drives the water distribution plate to rotate, and the water distribution port, in conjunction with the curved groove, evenly sprays the incoming water onto the surface of the filter membrane, solving the dead zone problem of traditional static water distribution, avoiding local concentration polarization, and significantly delaying membrane fouling. The centrifugal distribution of the curved groove creates a spiral path for the water flow on the membrane surface, increasing the effective filtration time, improving the permeation efficiency of small molecules, and reducing the deposition of large molecules on the membrane surface. Attached Figure Description

[0014] Figure 1 This is a three-dimensional view of the overall structure of a combined filter membrane and water flow optimization support proposed in this utility model.

[0015] Figure 2 This is a main sectional view of the overall structure of a combined filter membrane and water flow optimization support proposed in this utility model;

[0016] Figure 3 This utility model proposes a combined filter membrane and a water flow optimization support. Figure 2 Enlarged view of the structure at point A in the middle;

[0017] Figure 4 This is a main sectional view of the connection between the water distribution plate and the filter cylinder of a combined filter membrane and water flow optimization support proposed in this utility model.

[0018] Figure 5 A three-dimensional view of the overall structure of the water distribution plate of the combined filter membrane and water flow optimization support proposed in this utility model;

[0019] Figure 6 This is a bottom view of the overall structure of the water distribution plate of the combined filter membrane and water flow optimization support proposed in this utility model.

[0020] Legend:

[0021] 1. Filter cartridge; 2. Cover plate; 3. Inlet pipe; 4. Inlet chamber; 5. Outlet pipe; 6. Drain pipe; 7. Support ring; 8. Fixing ring; 9. Mounting groove; 10. Impeller; 11. Shaft; 12. Water distribution plate; 13. Bend; 14. Arc plate; 15. Filter membrane body; 16. Water guide slope; 17. Locking block; 18. Long bolt; 19. Locking groove; 20. Guide block; 21. Spring; 22. Water outlet. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Reference Figures 1 to 6 This utility model provides a combined filter membrane and water flow optimization support: including a filter cylinder 1, a drain pipe 6 fixedly connected to the bottom surface of the filter cylinder 1, an external threaded pipe connected to the inside of the filter cylinder 1, a water distribution component rotatably connected to the inside of the external threaded pipe, a cover plate 2 fixedly connected to the top surface of the external threaded pipe, a driving component provided on the top surface of the cover plate 2, the driving component rotatably passing through the top surface of the cover plate 2 and fixedly connected to the water distribution component, an inlet pipe 3 and an outlet pipe 5 respectively provided on the outside of the driving component, the outlet pipe 5 fixedly connected to the cover plate 2, the bottom surface of the external threaded pipe abutting against a support frame, the support frame slidably connected inside the filter cylinder 1, a filter element provided inside the support frame, the support frame including two symmetrically slidably connected arc plates 14 inside the filter cylinder 1, two symmetrically opened mounting grooves 9 on the side wall of the filter cylinder 1, the arc plates 14 slidably connected inside the mounting grooves 9, the top surfaces of the two arc plates 14 are jointly fixed with a fixing ring 8, and the filter element is connected between the two arc plates 14;

[0024] The water distribution component includes a connecting ring fixedly connected to the inner wall of the external threaded pipe. The top surface of the connecting ring is rotatably connected to the water distribution plate 12. The top surface of the water distribution plate 12 passes through four water distribution ports 22 distributed in an equidistant ring array. The bottom surface of the water distribution plate 12 is fixedly connected to multiple bends 13. The bends 13 are located below the water distribution ports 22. The driving component is fixedly connected to the center of the top surface of the water distribution plate 12.

[0025] The driving component includes a water inlet chamber 4 fixedly connected to the center of the top surface of the cover plate 2, an impeller 10 rotatably connected inside the water inlet chamber 4, a rotating shaft 11 fixedly connected to the bottom surface of the impeller 10, the rotating shaft 11 rotatably passes through the cover plate 2 and is fixed at the center of the top surface of the water distribution plate 12, and the water inlet pipe 3 and the water outlet pipe 5 are fixed outside the water inlet chamber 4.

[0026] The filter element includes three equidistant axially mounted support rings 7 between two arc-shaped plates 14. Each support ring 7 is fixedly connected to a filter membrane body 15. The pore diameter of the three filter membrane bodies 15 decreases from top to bottom. The top surface of the support ring 7 is provided with a water guide slope 16 inclined towards the center of the support ring 7.

[0027] The inner sides of the two arc-shaped plates 14 are respectively provided with slots 19, and the slots 19 are slidably connected with the slots 17. The slots 17 are fixedly connected with the support ring 7. The bottom surface of the slots 17 passes through the mounting hole, and the mounting hole is fitted with a long bolt 18. The end of the long bolt 18 is threaded to the top wall of the slots 19.

[0028] The guide block 20 is slidably connected inside the mounting groove 9. The guide block 20 abuts against the bottom surface of the arc plate 14, and the fixing ring 8 abuts against the bottom surface of the external threaded pipe. A compressed spring 21 is fixed between the guide block 20 and the bottom wall of the mounting groove 9.

[0029] By employing a three-layer filter membrane body 15 with progressively decreasing pore size, a physical hierarchical filtration system is formed, intercepting pollutants of different particle sizes step by step. This reduces the load on a single membrane layer and improves the overall separation accuracy. The inclined water guide slope 16 on the top surface of the support ring 7 guides the water flow towards the center of the membrane, avoiding edge short-circuiting and ensuring that the liquid passes through each membrane layer evenly, reducing the possibility of untreated water directly penetrating. Furthermore, the impeller 10 drives the water distribution plate 12 to rotate, and the water distribution port 22, in conjunction with the bend 13, evenly sprays the incoming water onto the surface of the filter membrane, solving the dead zone problem of traditional static water distribution, avoiding local concentration polarization, and significantly delaying membrane fouling. The centrifugal distribution of the bend 13 causes the water flow to form a spiral path on the membrane surface, increasing the effective filtration time, improving the permeation efficiency of small molecules, and reducing the deposition of large molecules on the membrane surface.

[0030] Working principle: The liquid to be filtered enters the inlet chamber 4 through the inlet pipe 3, impacting the impeller 10 inside. The water pressure drives the impeller 10 to rotate, and the impeller 10 drives the water distribution plate 12 below to rotate synchronously through the rotating shaft 11. The water distribution system is automatically driven by the kinetic energy of the incoming water, requiring no additional energy. The rotating water distribution plate 12 is equipped with four water outlets 22 and multiple bends 13. After the liquid flows out from the water outlets 22, it is guided by the bends 13 to form a spiral water flow, which is evenly sprayed on the surface of the filter element below. This avoids the "dead zone" or "short flow" problem in traditional membrane modules, ensuring maximum utilization of the membrane surface, extending the contact time between the liquid and the filter membrane, and improving filtration efficiency. At the same time, the rotating water flow washes the membrane surface, reducing pollutant deposition. The filter element consists of three support rings 7, each with a filter membrane body 15 of different pore sizes (such as MF→UF→NF or UF→NF→RO), forming a gradient filtration with progressively smaller pore sizes from top to bottom. After multi-stage filtration, small molecules (which pass through the filter) are filtered out. The liquid enters the drain pipe 6 through the membrane pores and is discharged; the intercepted concentrate adheres to the membrane surface and is thrown towards the side wall of the filter cartridge 1 with the rotating water flow, and is finally discharged through the outlet pipe 5. Each layer of support ring 7 has an inclined water guide slope 16 on the top surface to guide the water flow to the center and avoid edge fouling. Large particulate pollutants are intercepted by the upper coarse filter membrane, and the lower fine filter membrane treats small molecules. The staged filtration reduces the load on the single membrane, reduces membrane fouling, and extends the membrane life. When the filter element needs to be disassembled and replaced, the external threaded pipe is taken out and the water distribution component is taken out from the filter cartridge 1. When the external threaded pipe is taken out, the spring 21 in the compressed state is reset, so that the fixing ring 8 moves upward and moves to the top surface of the filter cartridge 1. Then the support frame is taken out from the filter cartridge 1. Then the support frame is inverted and the long bolt 18 is taken out. Then the three filter membrane bodies 15 are taken out from the support frame.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A combined filter membrane and water flow optimization support, comprising a filter cartridge (1), characterized in that: The bottom surface of the filter cylinder (1) is fixedly connected to the drain pipe (6). The internal thread of the filter cylinder (1) is connected to the external thread pipe. The internal thread of the external thread pipe is rotatably connected to the water distribution component. The top surface of the external thread pipe is fixedly connected to the cover plate (2). The top surface of the cover plate (2) is provided with a driving component. The driving component rotatably passes through the top surface of the cover plate (2) and is fixedly connected to the water distribution component. The external surface of the driving component is provided with an inlet pipe (3) and an outlet pipe (5). The outlet pipe (5) is fixedly connected to the cover plate (2). The bottom surface of the external thread pipe abuts against the support frame. The support frame is slidably connected inside the filter cylinder (1). The support frame is provided with a filter component.

2. The combined filter membrane and water flow optimization support according to claim 1, characterized in that: The support frame includes two symmetrically slidably connected arc-shaped plates (14) inside the filter cylinder (1). Two mounting grooves (9) are symmetrically opened on the side wall of the filter cylinder (1). The arc-shaped plates (14) are slidably connected in the mounting grooves (9). The top surfaces of the two arc-shaped plates (14) are jointly fixed with a fixing ring (8). The filter element is connected between the two arc-shaped plates (14).

3. The combined filter membrane and water flow optimization support according to claim 1, characterized in that: The water distribution component includes a connecting ring fixedly connected to the inner wall of the external threaded pipe. The top surface of the connecting ring is rotatably connected to a water distribution plate (12). The top surface of the water distribution plate (12) has four water outlets (22) distributed in an equidistant ring array. The bottom surface of the water distribution plate (12) is fixedly connected to multiple bends (13). The bends (13) are located below the water outlets (22). The driving component is fixedly connected to the center of the top surface of the water distribution plate (12).

4. The combined filter membrane and water flow optimization support according to claim 3, characterized in that: The driving component includes a water inlet chamber (4) fixedly connected to the center of the top surface of the cover plate (2), an impeller (10) rotatably connected inside the water inlet chamber (4), a rotating shaft (11) fixedly connected to the bottom surface of the impeller (10), the rotating shaft (11) rotatably passes through the cover plate (2) and is fixed to the center of the top surface of the water distribution plate (12), and the water inlet pipe (3) and the water outlet pipe (5) are fixed to the outside of the water inlet chamber (4).

5. The combined filter membrane and water flow optimization support according to claim 2, characterized in that: The filter element includes three equidistant support rings (7) axially mounted between the two arc-shaped plates (14). Each support ring (7) is fixedly connected to a filter membrane body (15). The pore diameter of the three filter membrane bodies (15) decreases from top to bottom. The top surface of the support ring (7) is provided with a water guide slope (16) inclined towards the center of the support ring (7).

6. The combined filter membrane and water flow optimization support according to claim 5, characterized in that: The inner sides of the two arc-shaped plates (14) are respectively provided with slots (19), and a slidable block (17) is connected in the slot (19). The block (17) is fixedly connected to the support ring (7). The bottom surface of the block (17) passes through the mounting hole, and a long bolt (18) is sleeved in the mounting hole. The end of the long bolt (18) is threaded to the top wall of the slot (19).

7. The combined filter membrane and water flow optimization support according to claim 2, characterized in that: The guide block (20) is slidably connected in the mounting groove (9). The guide block (20) abuts against the bottom surface of the arc plate (14). The fixing ring (8) abuts against the bottom surface of the external threaded tube. A compressed spring (21) is fixed between the guide block (20) and the bottom wall of the mounting groove (9).